866786513766076 has 24 divisors (see below), whose sum is σ = 1519126013162016. Its totient is φ = 432750517617600.

The previous prime is 866786513766071. The next prime is 866786513766077. The reversal of 866786513766076 is 670667315687668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866786513766071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504322210 + ... + 506038006.

It is an arithmetic number, because the mean of its divisors is an integer number (63296917215084).

Almost surely, 2^{866786513766076} is an apocalyptic number.

It is an amenable number.

866786513766076 is a deficient number, since it is larger than the sum of its proper divisors (652339499395940).

866786513766076 is a wasteful number, since it uses less digits than its factorization.

866786513766076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903029 (or 1903027 counting only the distinct ones).

The product of its (nonzero) digits is 15362887680, while the sum is 82.

The spelling of 866786513766076 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, five hundred thirteen million, seven hundred sixty-six thousand, seventy-six".